JPS6355043B2 - - Google Patents

Info

Publication number
JPS6355043B2
JPS6355043B2 JP53130620A JP13062078A JPS6355043B2 JP S6355043 B2 JPS6355043 B2 JP S6355043B2 JP 53130620 A JP53130620 A JP 53130620A JP 13062078 A JP13062078 A JP 13062078A JP S6355043 B2 JPS6355043 B2 JP S6355043B2
Authority
JP
Japan
Prior art keywords
sum
light
focus
value
detection method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP53130620A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5557809A (en
Inventor
Takeomi Suzuki
Masahiro Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP13062078A priority Critical patent/JPS5557809A/ja
Priority to GB7936720A priority patent/GB2038586B/en
Priority to FR7926246A priority patent/FR2440006A1/fr
Priority to DE2942794A priority patent/DE2942794C2/de
Priority to US06/087,489 priority patent/US4314151A/en
Publication of JPS5557809A publication Critical patent/JPS5557809A/ja
Publication of JPS6355043B2 publication Critical patent/JPS6355043B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
JP13062078A 1978-10-24 1978-10-24 Focusing detection system Granted JPS5557809A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP13062078A JPS5557809A (en) 1978-10-24 1978-10-24 Focusing detection system
GB7936720A GB2038586B (en) 1978-10-24 1979-10-23 Focus detection system
FR7926246A FR2440006A1 (fr) 1978-10-24 1979-10-23 Dispositif detecteur de position focalisee d'un instrument optique
DE2942794A DE2942794C2 (de) 1978-10-24 1979-10-23 Vorrichtung zur elektrischen Ermittlung der Scharfeinstellung eines Objektivs
US06/087,489 US4314151A (en) 1978-10-24 1979-10-23 Focus detection by accumulation of a given number of the largest absolute difference magnitudes between adjacent photocells in an array

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13062078A JPS5557809A (en) 1978-10-24 1978-10-24 Focusing detection system

Publications (2)

Publication Number Publication Date
JPS5557809A JPS5557809A (en) 1980-04-30
JPS6355043B2 true JPS6355043B2 (enrdf_load_stackoverflow) 1988-11-01

Family

ID=15038576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13062078A Granted JPS5557809A (en) 1978-10-24 1978-10-24 Focusing detection system

Country Status (5)

Country Link
US (1) US4314151A (enrdf_load_stackoverflow)
JP (1) JPS5557809A (enrdf_load_stackoverflow)
DE (1) DE2942794C2 (enrdf_load_stackoverflow)
FR (1) FR2440006A1 (enrdf_load_stackoverflow)
GB (1) GB2038586B (enrdf_load_stackoverflow)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5650315A (en) * 1979-10-01 1981-05-07 Canon Inc Focus detecting method and device
JPS5697325A (en) * 1979-12-29 1981-08-06 Asahi Optical Co Ltd Focus detecting method of camera
DE3131053C2 (de) * 1980-08-07 1983-12-29 Asahi Kogaku Kogyo K.K., Tokyo Automatische Fokussierungsermittlungseinrichtung für eine Kamera
JPS5788417A (en) * 1980-11-21 1982-06-02 Hitachi Denshi Ltd Automatic focusing system
EP0054349A3 (en) * 1980-12-10 1983-03-16 EMI Limited Automatically focussed optical system
JPS57158820A (en) * 1981-03-27 1982-09-30 Olympus Optical Co Ltd Method for focusing detection
JPS57158819A (en) * 1981-03-27 1982-09-30 Olympus Optical Co Ltd Method for focusing detection
JPS58106515A (ja) * 1981-12-21 1983-06-24 Olympus Optical Co Ltd 内視鏡
US4465940A (en) * 1982-04-15 1984-08-14 The United States Of America As Represented By The Secretary Of The Air Force Electro-optical target detection
JPS58211721A (ja) * 1982-06-04 1983-12-09 Olympus Optical Co Ltd 合焦検出方法
US4481413A (en) * 1982-06-30 1984-11-06 Honeywell Inc. Strip mirror radiation splitter for range determination systems
GB2129642B (en) * 1982-11-05 1986-09-10 British Library Board Focus detection
GB2152780B (en) * 1983-11-15 1987-06-03 Gec Avionics Distance measurement
ATE68271T1 (de) * 1984-04-16 1991-10-15 Image Recognition Systems Ltd Automatische fokussiereinrichtung.
DE3510066C1 (de) * 1985-03-20 1986-05-07 Will Wetzlar Gmbh, 6330 Wetzlar Verfahren zur Fokussierung eines optischen Abbildungssystems sowie Einrichtung zur Durchfuehrung des Verfahrens
US4752831A (en) * 1986-05-20 1988-06-21 Polaroid Corporation Focusing system for camera apparatus
JP2002287017A (ja) * 2001-03-28 2002-10-03 Fuji Photo Optical Co Ltd 撮影レンズのピント状態検出装置
EP2438554B1 (en) * 2009-06-01 2020-04-01 Bio-Rad Laboratories, Inc. Calibration of imaging device for biological/chemical samples
DE102009045107A1 (de) * 2009-09-29 2011-03-31 Carl Zeiss Imaging Solutions Gmbh Automatisches Fokussierverfahren für ein optisches Instrument zum vergrößerten Betrachten eines Objektes
EP4468723A4 (en) * 2022-01-18 2025-02-19 Fujikura Ltd. IMAGING DEVICE, IMAGING METHOD AND METHOD FOR PRODUCING THE IMAGING DEVICE

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967056A (en) * 1973-02-26 1976-06-29 Minolta Camera Kabushiki Kaisha Automatic focusing apparatus
US4047187A (en) * 1974-04-01 1977-09-06 Canon Kabushiki Kaisha System for exposure measurement and/or focus detection by means of image senser
JPS50129220A (enrdf_load_stackoverflow) * 1974-04-01 1975-10-13
JPS5154432A (en) * 1974-11-07 1976-05-13 Asahi Optical Co Ltd Shotenkenshutsusochi
JPS5156627A (en) * 1974-11-13 1976-05-18 Canon Kk Butsutaizosenmeidokenshutsuhoshiki
US4083056A (en) * 1975-09-09 1978-04-04 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device for single-lens reflex cameras
JPS5914723B2 (ja) * 1976-05-22 1984-04-05 旭光学工業株式会社 一眼レフカメラの焦点検出装置
FR2386832A1 (fr) * 1977-04-05 1978-11-03 Commissariat Energie Atomique Procede de correction automatique de mise au point d'un microscope et un dispositif mettant en oeuvre ledit procede
JPS5413330A (en) * 1977-07-01 1979-01-31 Olympus Optical Co Ltd Automatic focus adjusting system
US4265520A (en) * 1977-11-28 1981-05-05 Asahi Kogaku Kogyo Kabushiki Kaisha Focus detecting device in single lens reflex camera

Also Published As

Publication number Publication date
FR2440006B1 (enrdf_load_stackoverflow) 1982-10-29
DE2942794A1 (de) 1980-04-30
JPS5557809A (en) 1980-04-30
FR2440006A1 (fr) 1980-05-23
DE2942794C2 (de) 1983-11-10
GB2038586B (en) 1983-08-17
GB2038586A (en) 1980-07-23
US4314151A (en) 1982-02-02

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